Can you crack the unlock code for the lock using the 5 clues below?
- Clue #1:
682– One number is correct and well placed - Clue #2:
614– One number is correct but wrongly placed - Clue #3:
206– Two numbers are correct but both are wrongly placed - Clue #4:
738– None of the numbers are correct - Clue #5:
780– One number is correct but wrongly placed
Answer
The code is 042.
Based on clue #1 and #2, we can say that 6 is not the correct number.
Now we know that the unlock code does not contain 6 and based on clue #3, we know that 2 and 0 are correct numbers but in the wrong position. From clue #1, 2‘s position should be on the right. The code is ??2.
Based on clue #5, 0‘s position should be on the left. The code is 0?2.
We have to find the missing number in the middle position. Based on clue #2, the middle number has to be 4. It cannot be 1, as the statement says that the number is wrongly placed.